That looks much easier to make on a mill. Since you've changed the square holes to round ones, it looks easier than ever to make them on a drill press fixture.
I'm not necessarily going to bid this but maybe I can help you to make some other improvements in your product that having them cut in a mill could make possible.
Have you considered:
- Adding thickness to the plates for any reason? Like maybe a pocket into thicker material so an adjustment or switch can't be accidentally bumped? Or just to add some visual detail to the product over a plain flat plate?
- What about engraving? Once it's in a mill, they could be engraved with your nomenclature.
- Do you want these brushed finish? Polished? Tumbled? Are you going to get them anodized later? Or is supplying them 'as milled' good enough for you?
Stamping holds the advantage on inexpensive production when the units are in the 1000s. If you're low-production and having them milled anyway, another buck or two per part could make a huge difference in the visual details possible.
Everybody else: ignore my hijack. He asked for a bid on what's posted. I'm just trying to help him here. 